CITY OF MASON: EPA violation history, explained
CITY OF MASON has at least one health-based violation EPA's ECHO database still lists as unaddressed - the required fix has not been reported complete. 2,228 people get their water from it, across 1,327 connections.
CITY OF MASON's record against the rest of the country
152 total violations and 116 health-based ones put CITY OF MASON at the 100th percentile nationally for violation burden, rank 54 of 12,903.
How CITY OF MASON compares within TX
TX's 1,633 covered systems average 6.7 health-based violations each; CITY OF MASON carries 116, more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for CITY OF MASON is from 2027-06-12 (health-based: 2026-11-04). Last reported to EPA: 06/26/2026.
What kind of problem, specifically
CITY OF MASON's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Radionuclides - flagged from: Combined Radium (-226 and -228); Gross Alpha, Excl. Radon and U
- Microbial contamination / treatment technique - flagged from: Revised Total Coliform Rule
The most severe category on record is radionuclides, which points toward a reverse osmosis-class filter if you want to address it directly.
What this data is and is not
CITY OF MASON's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 116 health-based violations on file for CITY OF MASON - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.